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Rocket
Developer	Sergio Benitez[1]
Initial release	2016; 10 years ago (2016)
Stable release	0.5.1[2]  / 23 May 2024; 20 months ago (23 May 2024)
Written in	Rust
Operating system	Linux,macOS,Windows,FreeBSD,OpenBSD
Type	Web framework
License	MIT License orApache License
Website	rocket.rs
Repository	github.com/rwf2/Rocket

Rocket is aweb framework written inRust.^[3][4] It supports handlingHTTP requests,Web Sockets,JSON,templating, and more. Its design was inspired byRails,Flask, Bottle, andYesod.^[5] It isdually licensed under theMIT License and theApache License.

To create a web server with Rocket, the user will define an application, then use the "mount" function to attach "routes" to it. Each "route" is a rust function with amacro attached to it. The function will define code that should respond to anHTTP request. The macro that is written as part of the function declaration will define whichHTTP Method (such as GET, POST, PUT, etc.) it should be handle, as well as a pattern describing theURL it should be relevant to.

This is an example of a working rocket application:

#[macro_use]externcraterocket;#[get("/hello/<name>/<age>")]fnhello(name:&str,age:u8)->String{format!("Hello, {} year old named {}!",age,name)}#[launch]fnrocket()->_{rocket::build().mount("/",routes![hello])}

Sending an HTTP GET request to/hello/John/50 would return the following response:

Hello, 50 year old named John!.

Rocket implements the following features:

• Routing - Rocket allows the user to define the structure of routes that the application should consider, as well as the code that should run in different routing combination. For example, the following code will make the rocket application to respond to the/hello route with "Hello World":

  #[get("/")]fnindex()->&'staticstr{"Hello, world!"}

• Form Data - Rocket allows the user to define aSerde model, and use it to parse the Form Data, and pass it as native rust object to the route handler.
• Request Guards - the route handlers can contain a special kind of parameters named "Request Guard"s that are meant to prevent the code inside the handler to be called in case a certain condition is not met. This feature can be used for example, to prevent requests that do not contain aAPI Key. By using the Request Guard feature, the user can define the condition in one place, and apply it to prevent access to multiple routes by adding the guard to their list of parameters.

• Official website
• Rocket onGitHub

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